package io.sentry

import com.github.javafaker.Faker
import io.sentry.Baggage.MAX_BAGGAGE_LIST_MEMBER_COUNT
import io.sentry.Baggage.MAX_BAGGAGE_STRING_LENGTH
import io.sentry.protocol.SentryId
import java.util.UUID
import kotlin.test.BeforeTest
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFalse
import kotlin.test.assertNotNull
import kotlin.test.assertNull
import kotlin.test.assertTrue

class BaggageTest {
  lateinit var logger: ILogger

  @BeforeTest
  fun setup() {
    logger = NoOpLogger.getInstance()
  }

  @Test
  fun `can parse single baggage string with white spaces in it`() {
    val baggage =
      Baggage.fromHeader(
        "sentry-userId =  alice   ,  sentry-serverNode = DF%2028,sentry-isProduction=false",
        false,
        logger,
      )

    assertEquals("alice", baggage.get("sentry-userId"))
    assertEquals("DF 28", baggage.get("sentry-serverNode"))
    assertEquals("false", baggage.get("sentry-isProduction"))

    assertEquals(
      "sentry-isProduction=false,sentry-serverNode=DF%2028,sentry-userId=alice",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `retain single third party baggage string`() {
    val baggage =
      Baggage.fromHeader("userId=alice,serverNode=DF%2028,isProduction=false", true, logger)

    assertEquals(
      "userId=alice,serverNode=DF%2028,isProduction=false",
      baggage.toHeaderString(baggage.getThirdPartyHeader()),
    )
  }

  @Test
  fun `sentry values in third party baggage string are removed`() {
    val baggage =
      Baggage.fromHeader(
        "userId=alice,sentry-thirdParty=thirdPartyValue,serverNode=DF%2028,isProduction=false",
        true,
        logger,
      )

    assertEquals(
      "userId=alice,serverNode=DF%2028,isProduction=false",
      baggage.getThirdPartyHeader(),
    )
  }

  @Test
  fun `third party headers are dropped if not specified to keep`() {
    val baggage =
      Baggage.fromHeader("userId=alice,sentry-serverNode=DF%2028,isProduction=false", logger)

    assertEquals("sentry-serverNode=DF%2028", baggage.toHeaderString(null))
  }

  @Test
  fun `multiple baggage headers are merged into one, third party headers are dropped`() {
    val headerValues =
      listOf(
        "userId=alice,sentry-serverNode=DF%2028,isProduction=false",
        "sentry-environment=production, os=android",
        "trace=123456, isSampled=true",
      )

    val baggage = Baggage.fromHeader(headerValues, logger)

    assertEquals(
      "sentry-environment=production,sentry-serverNode=DF%2028",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `sentry entries are stripped from third party headers and saved in original order`() {
    val headerValues =
      listOf(
        "userId=alice,sentry-serverNode=DF%2028,isProduction=false",
        "sentry-environment=production, os=android",
        "trace=123456, isSampled=true",
      )

    val baggage = Baggage.fromHeader(headerValues, true, logger)

    assertEquals(
      "userId=alice,isProduction=false,os=android,trace=123456,isSampled=true",
      baggage.thirdPartyHeader,
    )
  }

  @Test
  fun `when merging incoming and thirdparty baggages, sentry values are appended at the end`() {
    val headerValues =
      listOf(
        "userId=alice,sentry-serverNode=DF%2028,isProduction=false",
        "sentry-environment=production, os=android",
        "trace=123456, isSampled=true",
      )

    val baggage = Baggage.fromHeader(headerValues, false, logger)
    val thirdPartyBaggage = Baggage.fromHeader(headerValues, true, logger)

    assertEquals(
      "userId=alice,isProduction=false,os=android,trace=123456,isSampled=true,sentry-environment=production,sentry-serverNode=DF%2028",
      baggage.toHeaderString(thirdPartyBaggage.thirdPartyHeader),
    )
  }

  @Test
  fun `when merging and thirdparty headers already use up the available space, sentry values are not added`() {
    val largeThirdPartyHeaderValue =
      Faker.instance()
        .random()
        .hex(
          MAX_BAGGAGE_STRING_LENGTH - 16 - 12 - 1
        ) // 8192 - "large-value=" - "otherValue=value" - ","

    val incomingHeaderValues =
      listOf(
        "userId=alice,sentry-serverNode=DF%2028,isProduction=false",
        "sentry-environment=production, os=android",
        "trace=123456, isSampled=true",
      )

    val thirdPartyHeaderValues = "large-value=$largeThirdPartyHeaderValue, otherValue=value"

    val baggage = Baggage.fromHeader(incomingHeaderValues, false, logger)
    val thirdPartyBaggage = Baggage.fromHeader(thirdPartyHeaderValues, true, logger)

    val headerString = baggage.toHeaderString(thirdPartyBaggage.thirdPartyHeader)
    assertEquals(MAX_BAGGAGE_STRING_LENGTH, headerString.length)
    assertEquals("large-value=$largeThirdPartyHeaderValue,otherValue=value", headerString)
  }

  @Test
  fun `when merging third party baggage is kept even if it exceeds the allowed max length`() {
    val largeThirdPartyHeaderValue = Faker.instance().random().hex(MAX_BAGGAGE_STRING_LENGTH)

    val headerValues =
      listOf(
        "userId=alice,sentry-serverNode=DF%2028,isProduction=false",
        "sentry-environment=production, os=android",
        "trace=123456, isSampled=true",
      )

    val baggage = Baggage.fromHeader(headerValues, false, logger)
    val thirdPartyBaggage =
      Baggage.fromHeader("largeHeader=$largeThirdPartyHeaderValue", true, logger)
    val headerString = baggage.toHeaderString(thirdPartyBaggage.thirdPartyHeader)
    assertEquals(MAX_BAGGAGE_STRING_LENGTH + 12, headerString.length)
    assertEquals("largeHeader=$largeThirdPartyHeaderValue", headerString)
  }

  @Test
  fun `exceeding entry limit causes values to be dropped`() {
    val baggage = Baggage(logger)
    val expectedItems = mutableListOf<String>()

    for (i in 1..100) {
      val key = 100 + i
      baggage.set("a$key", "$i")
      if (i <= MAX_BAGGAGE_LIST_MEMBER_COUNT) {
        expectedItems.add("a$key=$i")
      }
    }

    val expectedHeaderString = expectedItems.joinToString(",")
    assertEquals(expectedHeaderString, baggage.toHeaderString(null))
  }

  @Test
  fun `if third party header exceeds entry limit, sentry headers are not added`() {
    val baggage = Baggage(logger)
    baggage.set("sentry-one", "value1")
    baggage.set("sentry-two", "value2")
    val thirdPartyItems = mutableListOf<String>()

    for (i in 1..70) {
      val key = 70 + i
      thirdPartyItems.add("a$key=$i")
    }

    val thirdPartyHeaderString = thirdPartyItems.joinToString(",")
    assertEquals(thirdPartyHeaderString, baggage.toHeaderString(thirdPartyHeaderString))
  }

  @Test
  fun `if third party header is close to entry limit only some sentry headers are added`() {
    val baggage = Baggage(logger)
    baggage.set("sentry-one", "value1")
    baggage.set("sentry-two", "value2")
    val thirdPartyItems = mutableListOf<String>()

    for (i in 1..63) {
      val key = 63 + i
      thirdPartyItems.add("a$key=$i")
    }

    val thirdPartyHeaderString = thirdPartyItems.joinToString(",")
    val expectedHeaderString = "$thirdPartyHeaderString,sentry-one=value1"
    assertEquals(expectedHeaderString, baggage.toHeaderString(thirdPartyHeaderString))
  }

  @Test
  fun `keys are encoded and decoded as well`() {
    val baggage =
      Baggage.fromHeader(
        "sentry-user%2Bid=alice,sentry-server%2Bnode=DF%2028,sentry-is%2Bproduction=false",
        logger,
      )

    assertEquals("alice", baggage.get("sentry-user+id"))
    assertEquals("DF 28", baggage.get("sentry-server+node"))
    assertEquals("false", baggage.get("sentry-is+production"))

    assertEquals(
      "sentry-is%2Bproduction=false,sentry-server%2Bnode=DF%2028,sentry-user%2Bid=alice",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `can parse multiple baggage strings`() {
    val baggage =
      Baggage.fromHeader(
        listOf("sentry-userId=alice", "sentry-serverNode=DF%2028,sentry-isProduction=false"),
        logger,
      )

    assertEquals("alice", baggage.get("sentry-userId"))
    assertEquals("DF 28", baggage.get("sentry-serverNode"))
    assertEquals("false", baggage.get("sentry-isProduction"))

    assertEquals(
      "sentry-isProduction=false,sentry-serverNode=DF%2028,sentry-userId=alice",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `can parse multiple baggage strings with white spaces`() {
    val baggage =
      Baggage.fromHeader(
        listOf(
          "sentry-userId =   alice",
          "sentry-serverNode = DF%2028, sentry-isProduction = false",
        ),
        logger,
      )

    assertEquals("alice", baggage.get("sentry-userId"))
    assertEquals("DF 28", baggage.get("sentry-serverNode"))
    assertEquals("false", baggage.get("sentry-isProduction"))

    assertEquals(
      "sentry-isProduction=false,sentry-serverNode=DF%2028,sentry-userId=alice",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `can parse null baggage string`() {
    val nothing: String? = null
    val baggage = Baggage.fromHeader(nothing, logger)
    assertEquals("", baggage.toHeaderString(null))
  }

  @Test
  fun `can parse blank baggage string`() {
    val baggage = Baggage.fromHeader("", logger)
    assertEquals("", baggage.toHeaderString(null))
  }

  @Test
  fun `can parse whitespace only baggage string`() {
    val baggage = Baggage.fromHeader("   ", logger)
    assertEquals("", baggage.toHeaderString(null))
  }

  @Test
  fun `can parse whitespace only baggage strings`() {
    val baggage = Baggage.fromHeader(listOf("   ", "   "), logger)
    assertEquals("", baggage.toHeaderString(null))
  }

  @Test
  fun `single large value is dropped and small values are kept`() {
    val largeValue = Faker.instance().random().hex(8193)
    val baggage =
      Baggage.fromHeader(
        "sentry-smallValue=remains,sentry-largeValue=$largeValue,sentry-otherValue=kept",
        logger,
      )

    assertEquals("remains", baggage.get("sentry-smallValue"))
    assertNotNull(baggage.get("sentry-largeValue"))
    assertEquals("kept", baggage.get("sentry-otherValue"))

    assertEquals("sentry-otherValue=kept,sentry-smallValue=remains", baggage.toHeaderString(null))
  }

  @Test
  fun `medium size value can cause small values to be dropped`() {
    val mediumValue =
      Faker.instance()
        .random()
        .hex(
          MAX_BAGGAGE_STRING_LENGTH - 19 - 22 - 1
        ) // 8192 - "sentry-mediumValue=" - "sentry-otherValue=kept" - ","
    val baggage =
      Baggage.fromHeader(
        "sentry-mediumValue=$mediumValue,sentry-smallValue=removed,sentry-otherValue=kept",
        logger,
      )

    assertEquals("removed", baggage.get("sentry-smallValue"))
    assertEquals(mediumValue, baggage.get("sentry-mediumValue"))
    assertEquals("kept", baggage.get("sentry-otherValue"))

    val headerString = baggage.toHeaderString(null)
    assertEquals(MAX_BAGGAGE_STRING_LENGTH, headerString.length)
    assertEquals("sentry-mediumValue=$mediumValue,sentry-otherValue=kept", headerString)
  }

  @Test
  fun `medium size value can cause all values to be dropped`() {
    // nothing else will fit after mediumValue as the separator + any key/value would exceed the
    // limit
    val mediumValue =
      Faker.instance()
        .random()
        .hex(
          MAX_BAGGAGE_STRING_LENGTH - 19 - 22
        ) // 8192 - "sentry-mediumValue=" - "sentry-otherValue=lost"
    val baggage =
      Baggage.fromHeader(
        "sentry-mediumValue=$mediumValue,sentry-smallValue=stripped,sentry-otherValue=lost",
        logger,
      )

    assertEquals("stripped", baggage.get("sentry-smallValue"))
    assertEquals(mediumValue, baggage.get("sentry-mediumValue"))
    assertEquals("lost", baggage.get("sentry-otherValue"))

    val headerString = baggage.toHeaderString(null)
    assertEquals(8170, headerString.length)
    assertEquals("sentry-mediumValue=$mediumValue", headerString)
  }

  @Test
  fun `null value is omitted from header string`() {
    val baggage = Baggage(logger)

    baggage.traceId = null
    baggage.publicKey = null
    baggage.release = null
    baggage.environment = null
    baggage.transaction = null
    baggage.userId = null

    assertEquals("", baggage.toHeaderString(null))
  }

  @Test
  fun `can set values from trace context`() {
    val baggage = Baggage(logger)
    val publicKey = Dsn(dsnString).publicKey
    val traceId = SentryId().toString()
    val userId = UUID.randomUUID().toString()

    baggage.setTraceId(traceId)
    baggage.setPublicKey(publicKey)
    baggage.setRelease("1.0-rc.1")
    baggage.setEnvironment("production")
    baggage.setTransaction("TX")
    baggage.setUserId(userId)
    baggage.setSampleRate((1.0 / 3.0))
    baggage.setSampled("true")

    assertEquals(
      "sentry-environment=production,sentry-public_key=$publicKey,sentry-release=1.0-rc.1,sentry-sample_rate=0.3333333333333333,sentry-sampled=true,sentry-trace_id=$traceId,sentry-transaction=TX,sentry-user_id=$userId",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `duplicate entries are lost`() {
    val baggage = Baggage.fromHeader("sentry-duplicate=a,sentry-duplicate=b", logger)
    assertEquals("sentry-duplicate=b", baggage.toHeaderString(null))
  }

  @Test
  fun `setting a value multiple times only keeps the last`() {
    val baggage = Baggage.fromHeader("", logger)

    baggage.traceId = "a"
    baggage.traceId = "b"
    baggage.traceId = "c"

    assertEquals("sentry-trace_id=c", baggage.toHeaderString(null))
  }

  @Test
  fun `setting values on frozen baggage has no effect`() {
    val baggage =
      Baggage.fromHeader("sentry-trace_id=a,sentry-transaction=sentryTransaction", logger)
    baggage.freeze()

    baggage.traceId = "b"
    baggage.traceId = "c"

    baggage.transaction = "newTransaction"
    baggage.environment = "production"

    assertEquals(
      "sentry-trace_id=a,sentry-transaction=sentryTransaction",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `if header contains sentry values baggage is marked as shouldFreeze`() {
    val baggage =
      Baggage.fromHeader("sentry-trace_id=a,sentry-transaction=sentryTransaction", logger)
    assertTrue(baggage.isShouldFreeze)
  }

  @Test
  fun `if header does not contain sentry values baggage is not marked as shouldFreeze`() {
    val baggage = Baggage.fromHeader("a=b", logger)
    assertFalse(baggage.isShouldFreeze)
  }

  @Test
  fun `value may contain = sign`() {
    val baggage = Baggage(logger)

    baggage.setTransaction("a=b")

    assertEquals("sentry-transaction=a%3Db", baggage.toHeaderString(null))
  }

  @Test
  fun `corrupted string does not throw out`() {
    val baggage = Baggage.fromHeader("a", logger)
    assertEquals("", baggage.toHeaderString(null))
  }

  @Test
  fun `corrupted string does not throw out 2`() {
    val baggage = Baggage.fromHeader("a=b=", logger)
    assertEquals("", baggage.toHeaderString(null))
  }

  @Test
  fun `corrupted string can be parsed partially`() {
    val baggage = Baggage.fromHeader("sentry-a=value,sentry-b", logger)
    assertEquals("sentry-a=value", baggage.toHeaderString(null))
  }

  @Test
  fun `baggage value encoding`() {
    // keep baggage-octet: %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
    val values =
      percentEncodedValues().also {
        /* some characters have been commented out
         * as per baggage specification we are allowed to encode these
         * and java.net.URLEncoder encodes them by default
         */
        //            it["!"] = "!" // instead of %21
        //            it["#"] = "#" // instead of %23
        //            it["$"] = "$" // instead of %24
        //            it["%"] = "%" // instead of %25
        //            it["&"] = "&" // instead of %26
        //            it["'"] = "'" // instead of %27
        //            it["("] = "(" // instead of %28
        //            it[")"] = ")" // instead of %29
        it["*"] = "*" // instead of %2A
        //            it["+"] = "+" // instead of %2B
        it["-"] = "-" // instead of %2D
        it["."] = "." // instead of %2E
        //            it["/"] = "/" // instead of %2F
        it["0"] = "0" // instead of %30
        it["1"] = "1" // instead of %31
        it["2"] = "2" // instead of %32
        it["3"] = "3" // instead of %33
        it["4"] = "4" // instead of %34
        it["5"] = "5" // instead of %35
        it["6"] = "6" // instead of %36
        it["7"] = "7" // instead of %37
        it["8"] = "8" // instead of %38
        it["9"] = "9" // instead of %39
        //            it[":"] = ":" // instead of %3A
        //            it["<"] = "<" // instead of %3C
        //            it["="] = "=" // instead of %3D
        //            it[">"] = ">" // instead of %3E
        //            it["?"] = "?" // instead of %3F
        //            it["@"] = "@" // instead of %40
        it["A"] = "A" // instead of %41
        it["B"] = "B" // instead of %42
        it["C"] = "C" // instead of %43
        it["D"] = "D" // instead of %44
        it["E"] = "E" // instead of %45
        it["F"] = "F" // instead of %46
        it["G"] = "G" // instead of %47
        it["H"] = "H" // instead of %48
        it["I"] = "I" // instead of %49
        it["J"] = "J" // instead of %4A
        it["K"] = "K" // instead of %4B
        it["L"] = "L" // instead of %4C
        it["M"] = "M" // instead of %4D
        it["N"] = "N" // instead of %4E
        it["O"] = "O" // instead of %4F
        it["P"] = "P" // instead of %50
        it["Q"] = "Q" // instead of %51
        it["R"] = "R" // instead of %52
        it["S"] = "S" // instead of %53
        it["T"] = "T" // instead of %54
        it["U"] = "U" // instead of %55
        it["V"] = "V" // instead of %56
        it["W"] = "W" // instead of %57
        it["X"] = "X" // instead of %58
        it["Y"] = "Y" // instead of %59
        it["Z"] = "Z" // instead of %5A
        //            it["["] = "[" // instead of %5B
        //            it["]"] = "]" // instead of %5D
        //            it["^"] = "^" // instead of %5E
        it["_"] = "_" // instead of %5F
        //            it["`"] = "`" // instead of %60
        it["a"] = "a" // instead of %61
        it["b"] = "b" // instead of %62
        it["c"] = "c" // instead of %63
        it["d"] = "d" // instead of %64
        it["e"] = "e" // instead of %65
        it["f"] = "f" // instead of %66
        it["g"] = "g" // instead of %67
        it["h"] = "h" // instead of %68
        it["i"] = "i" // instead of %69
        it["j"] = "j" // instead of %6A
        it["k"] = "k" // instead of %6B
        it["l"] = "l" // instead of %6C
        it["m"] = "m" // instead of %6D
        it["n"] = "n" // instead of %6E
        it["o"] = "o" // instead of %6F
        it["p"] = "p" // instead of %70
        it["q"] = "q" // instead of %71
        it["r"] = "r" // instead of %72
        it["s"] = "s" // instead of %73
        it["t"] = "t" // instead of %74
        it["u"] = "u" // instead of %75
        it["v"] = "v" // instead of %76
        it["w"] = "w" // instead of %77
        it["x"] = "x" // instead of %78
        it["y"] = "y" // instead of %79
        it["z"] = "z" // instead of %7A
      }

    val failures = mutableListOf<String>()

    values.forEach { key, value ->
      val baggage = Baggage(logger)
      baggage.setTransaction(key)

      val headerString = baggage.toHeaderString(null)
      if ("sentry-transaction=$value" != headerString) {
        failures.add("$key should be $value but was >$headerString<")
      }

      val decodedBaggage = Baggage.fromHeader(headerString, logger)
      decodedBaggage.get("sentry-transaction")
    }

    assertTrue(failures.joinToString("\n")) { failures.isEmpty() }
  }

  @Test
  fun `all characters defined as valid for keys can be used`() {
    val baggage = Baggage(logger)
    val key = "sentry-" + validTokenCharacters().joinToString("")
    baggage.set(key, "value")

    val reparsedBaggage = Baggage.fromHeader(baggage.toHeaderString(null), logger)
    assertEquals("value", reparsedBaggage.get(key))
  }

  @Test
  fun `baggage key replaces invalid characters`() {
    val baggage = Baggage(logger)
    baggage.set(invalidTokenCharacters().joinToString(""), "value")

    assertEquals(
      "%22%28%29%2C%2F%3A%3B%3C%3D%3E%3F%40%5B%5C%5D%7B%7D=value",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `can skip logger for header from single string`() {
    val baggage = Baggage.fromHeader("sentry-trace_id=a,sentry-transaction=sentryTransaction")
    assertEquals(
      "sentry-trace_id=a,sentry-transaction=sentryTransaction",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `can skip logger for header from list of strings`() {
    val baggage =
      Baggage.fromHeader(listOf("sentry-trace_id=a", "sentry-transaction=sentryTransaction"))
    assertEquals(
      "sentry-trace_id=a,sentry-transaction=sentryTransaction",
      baggage.toHeaderString(null),
    )
  }

  @Test
  fun `unknown returns sentry- prefixed keys that are not known and passes them on to TraceContext`() {
    val baggage =
      Baggage.fromHeader(
        listOf(
          "sentry-trace_id=${SentryId()},sentry-public_key=b, sentry-replay_id=${SentryId()}",
          "sentry-transaction=sentryTransaction, sentry-anewkey=abc",
        )
      )
    val unknown = baggage.unknown
    assertEquals(1, unknown.size)
    assertEquals("abc", unknown["anewkey"])

    val traceContext = baggage.toTraceContext()!!
    assertEquals(1, traceContext.unknown!!.size)
    assertEquals("abc", traceContext.unknown!!["anewkey"])
  }

  @Test
  fun `header with sentry values is marked for freezing`() {
    val baggage = Baggage.fromHeader("sentry-trace_id=a,sentry-transaction=sentryTransaction")
    assertTrue(baggage.isShouldFreeze)
  }

  @Test
  fun `header with sentry sample rand only is not marked for freezing`() {
    val baggage = Baggage.fromHeader("sentry-sample_rand=0.3")
    assertFalse(baggage.isShouldFreeze)
  }

  @Test
  fun `header without sentry values is not marked for freezing`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    assertFalse(baggage.isShouldFreeze)
  }

  @Test
  fun `sets values from traces sampling decision`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.setValuesFromSamplingDecision(TracesSamplingDecision(true, 0.021, 0.025))

    assertEquals("true", baggage.sampled)
    assertEquals(0.021, baggage.sampleRate!!, 0.0001)
    assertEquals(0.025, baggage.sampleRand!!, 0.0001)
  }

  @Test
  fun `handles null traces sampling decision`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.setValuesFromSamplingDecision(null)
  }

  @Test
  fun `sets values from traces sampling decision only if non null`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.setValuesFromSamplingDecision(TracesSamplingDecision(true, 0.021, 0.025))
    baggage.setValuesFromSamplingDecision(TracesSamplingDecision(false, null, null))

    assertEquals("false", baggage.sampled)
    assertEquals(0.021, baggage.sampleRate!!, 0.0001)
    assertEquals(0.025, baggage.sampleRand!!, 0.0001)
  }

  @Test
  fun `replaces only sample rate if already frozen`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.setValuesFromSamplingDecision(TracesSamplingDecision(true, 0.021, 0.025))
    baggage.freeze()
    baggage.setValuesFromSamplingDecision(TracesSamplingDecision(false, 0.121, 0.125))

    assertEquals("true", baggage.sampled)
    assertEquals(0.121, baggage.sampleRate!!, 0.0001)
    assertEquals(0.025, baggage.sampleRand!!, 0.0001)
  }

  @Test
  fun `sample rate can be retrieved as double`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.sampleRate = 0.1
    assertEquals(0.1, baggage.sampleRate!!, 0.0001)
  }

  @Test
  fun `sample rand can be retrieved as double`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.sampleRand = 0.1
    assertEquals(0.1, baggage.sampleRand!!, 0.0001)
  }

  @Test
  fun `null sample rand returns null double`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.sampleRand = null
    assertNull(baggage.sampleRand)
  }

  @Test
  fun `null sample rate returns null double`() {
    val baggage = Baggage.fromHeader("a=b,c=d")
    baggage.sampleRate = null
    assertNull(baggage.sampleRate)
  }

  /**
   * token = 1*tchar tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." / "^" / "_" /
   * "`" / "|" / "~" / DIGIT / ALPHA ; any VCHAR, except delimiters
   */
  private fun validTokenCharacters() =
    mutableListOf(
      "!",
      "#",
      "$",
      "%",
      "&",
      "'",
      "*",
      "+",
      "-",
      ".",
      "^",
      "_",
      "`",
      "|",
      "~",
      "0",
      "1",
      "2",
      "3",
      "4",
      "5",
      "6",
      "7",
      "8",
      "9",
      "10",
      "a",
      "b",
      "c",
      "d",
      "e",
      "f",
      "g",
      "h",
      "i",
      "j",
      "k",
      "l",
      "m",
      "n",
      "o",
      "p",
      "q",
      "r",
      "s",
      "t",
      "u",
      "v",
      "w",
      "x",
      "y",
      "z",
      "A",
      "B",
      "C",
      "D",
      "E",
      "F",
      "G",
      "H",
      "I",
      "J",
      "K",
      "L",
      "M",
      "N",
      "O",
      "P",
      "Q",
      "R",
      "S",
      "T",
      "U",
      "V",
      "W",
      "X",
      "Y",
      "Z",
    )

  private fun invalidTokenCharacters() =
    mutableListOf(
      "\"",
      "(",
      ")",
      ",",
      "/",
      ":",
      ";",
      "<",
      "=",
      ">",
      "?",
      "@",
      "[",
      "\\",
      "]",
      "{",
      "}",
    )

  private fun percentEncodedValues() =
    mutableMapOf(
      " " to "%20",
      "!" to "%21",
      "\"" to "%22",
      "#" to "%23",
      "$" to "%24",
      "%" to "%25",
      "&" to "%26",
      "'" to "%27",
      "(" to "%28",
      ")" to "%29",
      "*" to "%2A",
      "+" to "%2B",
      "," to "%2C",
      "-" to "%2D",
      "." to "%2E",
      "/" to "%2F",
      "0" to "%30",
      "1" to "%31",
      "2" to "%32",
      "3" to "%33",
      "4" to "%34",
      "5" to "%35",
      "6" to "%36",
      "7" to "%37",
      "8" to "%38",
      "9" to "%39",
      ":" to "%3A",
      ";" to "%3B",
      "<" to "%3C",
      "=" to "%3D",
      ">" to "%3E",
      "?" to "%3F",
      "@" to "%40",
      "A" to "%41",
      "B" to "%42",
      "C" to "%43",
      "D" to "%44",
      "E" to "%45",
      "F" to "%46",
      "G" to "%47",
      "H" to "%48",
      "I" to "%49",
      "J" to "%4A",
      "K" to "%4B",
      "L" to "%4C",
      "M" to "%4D",
      "N" to "%4E",
      "O" to "%4F",
      "P" to "%50",
      "Q" to "%51",
      "R" to "%52",
      "S" to "%53",
      "T" to "%54",
      "U" to "%55",
      "V" to "%56",
      "W" to "%57",
      "X" to "%58",
      "Y" to "%59",
      "Z" to "%5A",
      "[" to "%5B",
      "\\" to "%5C",
      "]" to "%5D",
      "^" to "%5E",
      "_" to "%5F",
      "`" to "%60",
      "a" to "%61",
      "b" to "%62",
      "c" to "%63",
      "d" to "%64",
      "e" to "%65",
      "f" to "%66",
      "g" to "%67",
      "h" to "%68",
      "i" to "%69",
      "j" to "%6A",
      "k" to "%6B",
      "l" to "%6C",
      "m" to "%6D",
      "n" to "%6E",
      "o" to "%6F",
      "p" to "%70",
      "q" to "%71",
      "r" to "%72",
      "s" to "%73",
      "t" to "%74",
      "u" to "%75",
      "v" to "%76",
      "w" to "%77",
      "x" to "%78",
      "y" to "%79",
      "z" to "%7A",
      "{" to "%7B",
      "|" to "%7C",
      "}" to "%7D",
      "~" to "%7E",
      "\u007F" to "%7F",
      "€" to "%E2%82%AC",
      "" to "%C2%81",
      "‚" to "%E2%80%9A",
      "ƒ" to "%C6%92",
      "„" to "%E2%80%9E",
      "…" to "%E2%80%A6",
      "†" to "%E2%80%A0",
      "‡" to "%E2%80%A1",
      "ˆ" to "%CB%86",
      "‰" to "%E2%80%B0",
      "Š" to "%C5%A0",
      "‹" to "%E2%80%B9",
      "Œ" to "%C5%92",
      "" to "%C2%8D",
      "Ž" to "%C5%BD",
      "" to "%C2%8F",
      "" to "%C2%90",
      "‘" to "%E2%80%98",
      "’" to "%E2%80%99",
      "“" to "%E2%80%9C",
      "”" to "%E2%80%9D",
      "•" to "%E2%80%A2",
      "–" to "%E2%80%93",
      "—" to "%E2%80%94",
      "˜" to "%CB%9C",
      "™" to "%E2%84%A2",
      "š" to "%C5%A1",
      "›" to "%E2%80%BA",
      "œ" to "%C5%93",
      "" to "%C2%9D",
      "ž" to "%C5%BE",
      "Ÿ" to "%C5%B8",
      "\u00A0" to "%C2%A0", // nbsp
      "¡" to "%C2%A1",
      "¢" to "%C2%A2",
      "£" to "%C2%A3",
      "¤" to "%C2%A4",
      "¥" to "%C2%A5",
      "¦" to "%C2%A6",
      "§" to "%C2%A7",
      "¨" to "%C2%A8",
      "©" to "%C2%A9",
      "ª" to "%C2%AA",
      "«" to "%C2%AB",
      "¬" to "%C2%AC",
      "­" to "%C2%AD",
      "®" to "%C2%AE",
      "¯" to "%C2%AF",
      "°" to "%C2%B0",
      "±" to "%C2%B1",
      "²" to "%C2%B2",
      "³" to "%C2%B3",
      "´" to "%C2%B4",
      "µ" to "%C2%B5",
      "¶" to "%C2%B6",
      "·" to "%C2%B7",
      "¸" to "%C2%B8",
      "¹" to "%C2%B9",
      "º" to "%C2%BA",
      "»" to "%C2%BB",
      "¼" to "%C2%BC",
      "½" to "%C2%BD",
      "¾" to "%C2%BE",
      "¿" to "%C2%BF",
      "À" to "%C3%80",
      "Á" to "%C3%81",
      "Â" to "%C3%82",
      "Ã" to "%C3%83",
      "Ä" to "%C3%84",
      "Å" to "%C3%85",
      "Æ" to "%C3%86",
      "Ç" to "%C3%87",
      "È" to "%C3%88",
      "É" to "%C3%89",
      "Ê" to "%C3%8A",
      "Ë" to "%C3%8B",
      "Ì" to "%C3%8C",
      "Í" to "%C3%8D",
      "Î" to "%C3%8E",
      "Ï" to "%C3%8F",
      "Ð" to "%C3%90",
      "Ñ" to "%C3%91",
      "Ò" to "%C3%92",
      "Ó" to "%C3%93",
      "Ô" to "%C3%94",
      "Õ" to "%C3%95",
      "Ö" to "%C3%96",
      "×" to "%C3%97",
      "Ø" to "%C3%98",
      "Ù" to "%C3%99",
      "Ú" to "%C3%9A",
      "Û" to "%C3%9B",
      "Ü" to "%C3%9C",
      "Ý" to "%C3%9D",
      "Þ" to "%C3%9E",
      "ß" to "%C3%9F",
      "à" to "%C3%A0",
      "á" to "%C3%A1",
      "â" to "%C3%A2",
      "ã" to "%C3%A3",
      "ä" to "%C3%A4",
      "å" to "%C3%A5",
      "æ" to "%C3%A6",
      "ç" to "%C3%A7",
      "è" to "%C3%A8",
      "é" to "%C3%A9",
      "ê" to "%C3%AA",
      "ë" to "%C3%AB",
      "ì" to "%C3%AC",
      "í" to "%C3%AD",
      "î" to "%C3%AE",
      "ï" to "%C3%AF",
      "ð" to "%C3%B0",
      "ñ" to "%C3%B1",
      "ò" to "%C3%B2",
      "ó" to "%C3%B3",
      "ô" to "%C3%B4",
      "õ" to "%C3%B5",
      "ö" to "%C3%B6",
      "÷" to "%C3%B7",
      "ø" to "%C3%B8",
      "ù" to "%C3%B9",
      "ú" to "%C3%BA",
      "û" to "%C3%BB",
      "ü" to "%C3%BC",
      "ý" to "%C3%BD",
      "þ" to "%C3%BE",
      "ÿ" to "%C3%BF",
    )
}
